Fortunately, she can turn to her husband for advice on acting: she's married to Heroes star, Adrian Pasdar.

"He's a huge help and very supportive," says Maines. "He has given me advice me on auditions in the past, but it still makes me nervous because I'm inexperienced when it comes to acting and he's a professional."

Nevertheless, Maines, who is known for her outspoken personality, is psyched to jump into this new medium: "I'm very excited. It's something I've always wanted to do. I've auditioned here and there, but we've always been busy with Dixie Chicks stuff, and with movies you have to be available."

Last year, the singer starred with her bandmates Martie Maguire and Emily Robinson in the documentary Shut Up and Sing, which chronicled the fallout from a 2003 London concert, at the start of the war in Iraq, when Maines told the audience: "Just so you know, we're ashamed the President of the United States is from Texas."